CN101694211B - Port plate for plunger pump - Google Patents

Port plate for plunger pump Download PDF

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Publication number
CN101694211B
CN101694211B CN2009102724257A CN200910272425A CN101694211B CN 101694211 B CN101694211 B CN 101694211B CN 2009102724257 A CN2009102724257 A CN 2009102724257A CN 200910272425 A CN200910272425 A CN 200910272425A CN 101694211 B CN101694211 B CN 101694211B
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CN
China
Prior art keywords
kidney slot
zone
low pressure
pressure
plunger pump
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Application number
CN2009102724257A
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Chinese (zh)
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CN101694211A (en
Inventor
贺小峰
李超
朱碧海
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华中科技大学
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Priority to CN2009102724257A priority Critical patent/CN101694211B/en
Publication of CN101694211A publication Critical patent/CN101694211A/en
Application granted granted Critical
Publication of CN101694211B publication Critical patent/CN101694211B/en

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Abstract

A port plate for a plunger pump belongs to a port plate for a hydraulic plunger pump, and aims at reducing cavitation corrosion, vibration and noise of the plunger pump during the distribution process, and improving the work stability of a pump. The port plate is circular, wherein a low pressure zone kidney slot and a high pressure zone kidney slot which are symmetrical relative to a cross shaft and are mutually isolated are arranged in a circular ring, the low pressure zone kidney slot and the high pressure zone kidney slot are respectively formed by kidney-shaped through holes which are divided into N segments, the inlets of the low pressure zone kidney slot and the high pressure kidney slot are respectively provided with a low pressure zone vibration-damping groove and a high pressure zone vibration-damping groove, the front end of the high pressure zone vibration-damping groove or the high pressure zone vibration-damping groove is a circular structure, the tail end is a V shape or an arc-shaped gradually-opened structure, the middle portion is an arc transition structure provided with a reducing hole, and the depths of all portions are different. The port plate has excellent cavitation resistance, small vibration, low noise and excellent work stability, and is suitable for plunger pump sport plates which utilize seawater, fresh water, high water base, mineral oil and the like as work medium, and is simultaneously also suitable for oil-pressure plunger pumps which utilize mineral oil as work medium.

Description

A kind of plunger pump is used thrust plate

Technical field

The invention belongs to hydraulic planger pump and use thrust plate, be specially adapted to end face flow-metering plunger pump in seawater, fresh water, the high water hydraulic system that makes the work medium such as water base.

Technical background

For hydraulic oil,, make the vibration of water pressure plunger pump and noise problem become one of key technology difficult problem of pump development because the viscosity of water is little, pressure for vaporization is high, Young's modulus is big.The noise of plunger pump is mainly produced by mechanical noise and flow noise, is again the main noise source with the flow distributing noise in the flow noise.Thrust plate is the vital part of valve plate distribution formula plunger pump, and its flow performance directly has influence on the vibration and the noiseproof feature of water pressure plunger pump.

Existing thrust plate adopts symplex structure, though simple in structure, there are not pre-loading and step-down in advance, air pocket, compression shock be can cause and cavitation erosion vibration and noise produced thus; The thrust plate of symmetric deflection structure needs pre-loading, in advance the geometric space volume of release is asymmetric on the rotor, be prone to cause unload pressure in advance and overflow, and produces air pocket, excited vibrational and noise.

Fig. 6 is that Danfoss company hydraulic pamp (or motor) is gone up a kind of thrust plate that adopts; It is shaped as ring; Circle ring center is a through hole; Annulus is made up of one concentric interior annulus and outer toroid, and the through-flow groove of interior annulus indent looping has isolated mutually and symmetrical with respect to transverse axis low pressure area kidney slot and zone of high pressure kidney slot on the outer toroid; Be communicated with plunger pump suction port and plunger pump outlet zone of high pressure respectively, low pressure area kidney slot inboard and external lateral portion form low pressure area inner seal band and low pressure area external sealed band respectively on the outer toroid; Zone of high pressure kidney slot inboard and external lateral portion form zone of high pressure inner seal band and zone of high pressure external sealed band respectively on the outer toroid; The inlet of low pressure area kidney slot and zone of high pressure kidney slot has U type vibration damping groove shown in Figure 7 along the sense of rotation of pump, and its front end 7-1 is a circular arc deformation overflow section, and terminal 7-3 and middle part 7-2 are the parallel groove of even depth.It is in preparatory stress-relief process, and the local micro cyclone that can form is rolled into a ball and hypotensive phenomenon, and is unfavorable to vibration and noise reducing.

The thrust plate of existing band vibration damping structure; Like vibration damping grooves such as vibration damping pass, triangle grooved, U type grooveds, in the flow transient process variation of pressure gradient bigger, phenomenon such as tend to take place release, superpressure, owe to boost; Can produce bigger shock and vibration, be unfavorable for the vibration and noise reducing of pump.

Summary of the invention

The present invention provides a kind of plunger pump to use thrust plate, and purpose is to reduce cavitation erosion, vibration, the noise in the plunger pump assignment process, improves the working stability of pump.

A kind of plunger pump of the present invention is used thrust plate; It is shaped as ring; Circle ring center is a through hole, and annulus is made up of one concentric interior annulus and outer toroid, the through-flow groove of interior annulus indent looping; Have low pressure area kidney slot and zone of high pressure kidney slot on the outer toroid; Said low pressure area kidney slot and zone of high pressure kidney slot are isolated mutually and symmetrical with respect to transverse axis, are communicated with plunger pump suction port and plunger pump outlet zone of high pressure respectively, and low pressure area kidney slot inboard and external lateral portion form low pressure area inner seal band and low pressure area external sealed band respectively on the outer toroid; Zone of high pressure kidney slot inboard and external lateral portion form zone of high pressure inner seal band and zone of high pressure external sealed band respectively on the outer toroid; Said low pressure area kidney slot and zone of high pressure kidney slot are made up of the waist through hole that is divided into the N section respectively, are the indent gusset between the waist through hole, N=3~5; It is characterized in that:

The inlet of said low pressure area kidney slot and zone of high pressure kidney slot has low pressure area vibration damping groove and zone of high pressure vibration damping groove along the sense of rotation of pump; Said low pressure area vibration damping groove or zone of high pressure vibration damping groove; Its front end is the circle hole shape structure; End is a gradually hatch frame of splayed shape or arc, and the middle part is the arc transition structure of band reducing, and each position degree of depth is identical.

Described plunger pump is used thrust plate, and it is further characterized in that: said zone of high pressure kidney slot cornerite is less than said low pressure area kidney slot cornerite.

Described plunger pump is used thrust plate; Shape, the structure of said low pressure area vibration damping groove and zone of high pressure vibration damping groove can be identical, and its front end is the circle hole shape structure, and end is a gradually hatch frame of splayed shape or arc; The middle part is the arc transition structure of band reducing, and each position degree of depth is identical.

Described plunger pump is used thrust plate; The through-flow groove of ring-type that can also have indent near excircle part in the said outer toroid of plane valving surface; Said through-flow groove is communicated with through connectivity slot with the excircle of said outer toroid, and the part between excircle on the outer toroid and the through-flow groove is separated to form multistage aiding support face.

Low pressure area vibration damping groove of the present invention and zone of high pressure vibration damping groove adopt and become the area of passage form; Low pressure area vibration damping groove is parallel with zone of high pressure vibration damping groove upper and lower surfaces; Variation from structure guiding velocity vector direction; Opening area is bigger when having guaranteed initially to contact with plunger, can in plunger cavity, not cause partial high pressure.Secondly, low pressure area vibration damping groove and zone of high pressure vibration damping groove have a reducing on medium position, its objective is the effect of pressure buffer.In addition because low pressure area vibration damping groove and zone of high pressure vibration damping groove adopt horizontal open-angle to control area of passage; High pressure water relatively low pressure district kidney slot is parallel entering with zone of high pressure kidney slot end face, helps reducing the little whirlpool of the local generation of low pressure area kidney slot and zone of high pressure kidney slot group.In low pressure area kidney slot and zone of high pressure kidney slot, have the indent gusset, can strengthen the rigidity of thrust plate, reduce distortion.

The present invention utilizes the flow passage structure of optimization; Make plunger cavity pressure and velocity variations gradient in pre-loading and preparatory release transient process even; There is not sudden change; And in transient process, do not have pressure release, cross boost or owe release, phenomenon such as owe to boost, reduced the cavitation erosion vibration and the compression shock of assignment process; Compare with similar thrust plate, cavitation resistive property is good, vibration is little, noise is low, good operating stability; Be applicable to seawater, fresh water, high water base etc. as in the water hydraulic system of working medium as the thrust plate of plunger pump; Equally also be applicable to the oil pressure plunger pump of mineral oil as working medium.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is positioned at the vibration damping groove structure enlarged view on the kidney slot of zone of high pressure among the present invention;

Fig. 3 is the another kind of structure enlarged view of the vibration damping groove that adopts in the present invention;

Fig. 4 is another kind of embodiment of the present invention, and low pressure area vibration damping groove 3 adopts Fig. 2 or vibration damping groove structure shown in Figure 3, and zone of high pressure vibration damping groove 7 adopts U type vibration damping groove structure shown in Figure 7;

Fig. 5 is another embodiment of the present invention, is provided with the through-flow groove of indent ring-type in the plane valving surface outer;

Fig. 6 is existing Danfoss company hydraulic pamp (or motor) port plate structure schematic representation, and its thrust plate adopts U type vibration damping groove;

Fig. 7 is a U type vibration damping groove structure enlarged view.

Embodiment

As shown in Figure 1; A kind of embodiment of the present invention, thrust plate matrix 6 is shaped as ring, and circle ring center is a through hole; Annulus is made up of one concentric interior annulus and outer toroid; The through-flow groove 8 of interior annulus indent looping has low pressure area kidney slot 1 and zone of high pressure kidney slot 5 on the outer toroid, said low pressure area kidney slot 1 is isolated mutually and symmetrical with respect to transverse axis with zone of high pressure kidney slot 5; Be communicated with plunger pump suction port and plunger pump outlet zone of high pressure respectively, low pressure area kidney slot 1 inboard and external lateral portion form low pressure area inner seal band 11 and low pressure area external sealed band 10 respectively on the outer toroid; Zone of high pressure kidney slot 5 inboards and external lateral portion form zone of high pressure inner seal band 13 and zone of high pressure external sealed band 12 respectively on the outer toroid; Said low pressure area kidney slot and zone of high pressure kidney slot are made up of the waist through hole that is divided into 3 sections respectively, are indent gusset 2 between the waist through hole, to improve the rigidity of thrust plate, reduce distortion.

The inlet of low pressure area kidney slot 1 and zone of high pressure kidney slot 5 has low pressure area vibration damping groove 3 and zone of high pressure vibration damping groove 7 along the sense of rotation of pump; Their front ends are the circle hole shape structures; End is a gradually hatch frame of splayed shape or arc, and the middle part is the arc transition structure of band reducing, and each position degree of depth is identical.

Also have lower dead centre restraining groove 4 and upper dead center restraining groove 9 on the thrust plate matrix 6.This thrust plate adopts non-positive interposed structure; Be that kidney slot 5 cornerites in zone of high pressure are less than low pressure area kidney slot 1 cornerite; When installing, adopt by thrust plate zero deflection to install; Upper dead center restraining groove 9 and lower dead centre restraining groove 4 are positioned on the longitudinal axis shown in Figure 1, guarantee that simultaneously the thinnest end of plunger pump swash plate also is positioned at the upper end of the pump longitudinal axis, the end that swash plate is the thickest is positioned at the lower end of the pump longitudinal axis.

Fig. 2 is a kind of enforcement state of Fig. 1 mesohigh district vibration damping groove 7, and its front end 7-1 is a circular hole deformation overflow section, and terminal 7-3 is a gradually opening of splayed shape, and middle part 7-2 is the arc transition district of band reducing.

Fig. 3 is that the another kind of Fig. 1 mesohigh district vibration damping groove 7 is implemented state, with the splayed shape of terminal 7-3 among Fig. 2 gradually opening be changed to gradually opening of circular arc.

Fig. 4 is another kind of embodiment of the present invention.At the low pressure area vibration damping groove 3 employing Fig. 2 of thrust plate low pressure area kidney slot inlet or the vibration damping groove of structure shown in Figure 3, the zone of high pressure vibration damping groove 7 of kidney slot inlet adopts U type vibration damping groove structure shown in Figure 7 in the zone of high pressure.

Fig. 5 is another embodiment of the present invention; The through-flow groove 14 of ring-type that can also have indent near excircle part in the said outer toroid of plane valving surface; Through-flow groove 14 is communicated with through 8 connectivity slots 16 with the excircle of outer toroid, and the part between excircle on the outer toroid and the through-flow groove is separated to form 8 sections aiding support faces 15.

Claims (4)

1. a plunger pump is used thrust plate; It is shaped as ring; Circle ring center is a through hole, and annulus is made up of one concentric interior annulus and outer toroid, the interior through-flow groove of annulus indent looping (8); Have low pressure area kidney slot (1) and zone of high pressure kidney slot (5) on the outer toroid; Said low pressure area kidney slot (1) and zone of high pressure kidney slot (5) are isolated mutually and symmetrical with respect to transverse axis, are communicated with plunger pump suction port and plunger pump outlet zone of high pressure respectively, and low pressure area kidney slot (1) inboard and external lateral portion form low pressure area inner seal band (11) and low pressure area external sealed band (10) respectively on the outer toroid; Zone of high pressure kidney slot (5) inboard and external lateral portion form zone of high pressure inner seal band (13) and zone of high pressure external sealed band (12) respectively on the outer toroid; Said low pressure area kidney slot (1) and zone of high pressure kidney slot (5) are made up of the waist through hole that is divided into the N section respectively, are indent gusset (2) between the waist through hole, N=3~5; It is characterized in that:
The inlet of said low pressure area kidney slot (1) and zone of high pressure kidney slot (5) has low pressure area vibration damping groove (3) and zone of high pressure vibration damping groove (7) along the sense of rotation of pump; Said low pressure area vibration damping groove (3) or zone of high pressure vibration damping groove (7); Its front end is the circle hole shape structure; End is a gradually hatch frame of splayed shape or arc, and the middle part is the arc transition structure of band reducing, and each position degree of depth is identical.
2. plunger pump as claimed in claim 1 is used thrust plate, it is characterized in that: said zone of high pressure kidney slot cornerite is less than said low pressure area kidney slot cornerite.
3. plunger pump as claimed in claim 1 is used thrust plate, it is characterized in that:
Shape, the structure of said low pressure area vibration damping groove and zone of high pressure vibration damping groove are identical, and its front end is the circle hole shape structure, and end is a gradually hatch frame of splayed shape or arc, and the middle part is the arc transition structure of band reducing, and each position degree of depth is identical.
4. use thrust plate like claim 1,2 or 3 described plunger pumps, it is characterized in that:
At the through-flow groove of ring-type (14) that the said outer toroid of plane valving surface partly has indent near excircle, said through-flow groove (14) is communicated with the excircle of said outer toroid.
CN2009102724257A 2009-10-16 2009-10-16 Port plate for plunger pump CN101694211B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009102724257A CN101694211B (en) 2009-10-16 2009-10-16 Port plate for plunger pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009102724257A CN101694211B (en) 2009-10-16 2009-10-16 Port plate for plunger pump

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CN101694211B true CN101694211B (en) 2012-06-13

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101881270A (en) * 2010-07-21 2010-11-10 无锡威孚精密机械制造有限责任公司 Oil distribution disk with damping structure
CN101892978B (en) * 2010-07-28 2012-07-04 北京航空航天大学 Valve plate structure for plunger pump
CN102155370A (en) * 2011-03-30 2011-08-17 浙江大学 Pure water hydraulic through-shaft type spherical distribution axial plunger pump
CN102297131A (en) * 2011-07-08 2011-12-28 兰州理工大学 Port plate and hydraulic pump equipped with it
CN106368811B (en) * 2016-08-26 2019-01-18 北京理工大学 A kind of valve plate, hydraulic output mechanism and engine for engine
CN110671289A (en) * 2019-11-26 2020-01-10 力源液压(苏州)有限公司 Axial plunger bidirectional variable pump

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1074019A (en) * 1991-12-30 1993-07-07 甘肃工业大学 The assignment method of low-noise axial plunger pump and port plate structure
CN1356467A (en) * 2001-12-25 2002-07-03 浙江大学 Low-noise hydraulic plunger pump with flow distributor having check valve
CN1544813A (en) * 2003-11-12 2004-11-10 浙江大学 Bubble evolution proof plunger pump port plate
CN1847649A (en) * 2005-10-28 2006-10-18 兰州理工大学 Oil film thickness controlling system for end fluid-distributing axial plunger pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1074019A (en) * 1991-12-30 1993-07-07 甘肃工业大学 The assignment method of low-noise axial plunger pump and port plate structure
CN1356467A (en) * 2001-12-25 2002-07-03 浙江大学 Low-noise hydraulic plunger pump with flow distributor having check valve
CN1544813A (en) * 2003-11-12 2004-11-10 浙江大学 Bubble evolution proof plunger pump port plate
CN1847649A (en) * 2005-10-28 2006-10-18 兰州理工大学 Oil film thickness controlling system for end fluid-distributing axial plunger pump

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